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TM 225/A
4
Connections and wiring
4.1
Connection of the shield-rail for analog signals
Fig.4-1:
1
2
4.1.1
Notes on wiring the analog lines
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4.2
Temperature inputs
4 measurement inputs are available for the PT100 resistance sensors. These
can be operated in 2 or 4 conductor technique.
The resolution of the measuring procedure on the inputs is 14Bit. Each of these
inputs is equipped with sensor failure monitoring.
Project engineering manual V1.06
© KEBA 2011
Connection of the shield-rail for analog signals
... Shield rail
... GND connection against 50 Hz field, length max. 1 m
Analog lines and reference current must be connected with a shielded ca-
ble.
The shield rail must be connected to the GND terminal at one point.
The shield must be placed on the shield rail as shown above.
To attain optimum interference immunity, analog lines and reference cur-
rent should not be laid out parallel to strong interfering lines (e.g. lines of
converters for motors).
Connections and wiring
13
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